Trailer Magazine

Cleverly engineered

  • From the July 2019 issue.
Cleverly engineered

At nearly 20 metres, the newly released Performance-Based Standards–approved Easysteer moving floor trailer by Graham Lusty Trailers offers a unique solution for high cubic haulage. Using a clever suspension design, coupled with an innovative braking system by Knorr-Bremse, the work of a B-double is being done with a single trailer.

Unveiled at the recent Brisbane Truck Show in mid-May, Graham Lusty Trailers (GLT) says that this new trailer solution is a world-first.

“It’s a 64 ft unit that can replace a B-double. The way it has been engineered results in a payload increase of about four to five tonne over a traditional tri-axle trailer, which is achieved purely by the Easysteer suspension module,” explains Simon Frederiksen, Marketing Manager at GLT. “Because wood chips are a light product, at around 380kg per cubic metre, we need to go longer with the trailer to get the 127 cubic metres. Payload wise, the trailer can carry up to 32.2 tonnes, when coupled with the twin steer truck it has been designed around.”

The trailer has B-double route access and is PBS approved. Its tare weight is 11.5 tonnes, compared to a traditional B-double moving floor, which GLT says typically weighs in at about 15-17 tonnes.
“So it’s quite a bit lighter,” Simon says. “It’s all about improving productivity and increasing safety, as we eliminate a second trailer within the combination. The time required to unload is also decreased because there is no need to unhook trailers to unload.”

Key to the increased payload is the Easysteer suspension module equipped with Hendrickson axles and airbag suspension. This innovative suspension design was originally engineered by Tasmanian based Elphinstone Engineering which specialises in logging trailers and weighing systems. GLT has now licensed the patent and is using it as an option to produce its moving floor trailers.

“Instead of the traditional tri-axle set-up, this trailer use special axle spacing’s with a tandem group and a single axle which gives you an increase payload of four to five tonne,” Simon says. “The way the suspension oscillates and turns is quite unique.”

As the 64ft Easysteer moving floor is a completely new concept, GLT needed to work closely with Knorr-Bremse when it came to the braking system.

“This trailer set up hasn’t been done before with an Electronic Braking System (EBS),” Simon says. “Knorr-Bremse custom tuned its system to suit how the suspension module reacts when going down the road.”

GLT has a long-standing partnership with Knorr-Bremse, that started almost a decade ago.

Simon says Knorr-Bremse is GLT’s preferred supplier for EBS, citing the high levels of aftersales service as a major drawcard, coupled with the brand’s innovative technology and programming.

“If a customer has a problem with their trailer braking system, we are often the first port of call, and Knorr-Bremse is always quick to rectify any issues,” he says. “Knorr-Bremse really listens to what the OEMs and their customers need.”

Looking ahead, GLT is working to further develop this Easysteer system for use in its end and side tipping trailers.

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